Overview
The LM2596S‑ADJ/NOPB is an adjustable step‑down (buck) DC‑DC converter designed for efficient power regulation in embedded and industrial systems. It is widely used in battery-powered devices, industrial power supplies, and LED drivers, where high efficiency, adjustable output, and reliable thermal protection are required. This regulator simplifies power supply design with a wide input range and robust protection features.
Core Parameters
| Parameter | Specification |
|---|---|
| Device Type | Adjustable Buck DC‑DC Converter |
| Input Voltage Range | 4.5 V to 40 V |
| Output Voltage Range | 1.2 V to 37 V |
| Output Current | Up to 3 A |
| Switching Frequency | ~150 kHz |
| Control Method | Voltage‑mode PWM |
| Protection | Overcurrent, Thermal Shutdown |
| Package | TO‑263‑5 (Surface Mount) |
| Operating Temperature | –40°C to +125°C |
These parameters make the device suitable for flexible, high-efficiency power conversion, especially where wide input voltage range and adjustable output are critical.
Features
- Wide adjustable output voltage from 1.2 V to 37 V
- Supports load currents up to 3 A
- High efficiency, reducing heat generation
- Internal 150 kHz oscillator minimizes external components
- Overcurrent and thermal shutdown protection
- RoHS-compliant, lead-free package
Typical Application Scenarios
- Industrial and distributed power supply modules
- Battery chargers and portable electronics
- LED drivers and embedded controllers
- Voltage regulation for communication equipment
- Automotive accessory power supplies
The LM2596SADJ adjustable buck regulator is frequently used with the 744212221 transformer to create efficient isolated DC‑DC power solutions. The LM2596SADJ manages voltage step-down and regulation, while the 744212221 provides isolation and reliable energy transfer for robust power supply designs.
Performance Comparison
| Feature | LM2596S‑ADJ/NOPB | Linear Regulators | Synchronous Buck Regulators |
|---|---|---|---|
| Efficiency | High (~73% typical) | Low | Very High |
| Output Range | Adjustable | Fixed | Adjustable |
| Component Count | Low | Minimal | Moderate |
| Thermal Performance | Good | Poor | High |
| Design Complexity | Low | Very Low | High |
The LM2596S‑ADJ/NOPB offers significantly higher efficiency than linear regulators while maintaining simple design requirements compared to more complex synchronous buck solutions.
Conclusion
The LM2596S‑ADJ/NOPB is a reliable and flexible buck converter ideal for embedded, industrial, and automotive power applications. Its adjustable output, robust protection features, and low external component count make it a preferred choice for designers seeking efficient and cost-effective DC-DC conversion.
Manufacturer Profile
Texas Instruments (TI) is a global leader in analog and embedded processing technologies. TI’s SIMPLE SWITCHER® products, including the LM2596S‑ADJ/NOPB, are trusted across industrial, automotive, and consumer markets for their reliability, efficiency, and design simplicity.
FAQ
Q1: What is the output voltage range of the LM2596S‑ADJ/NOPB?
A: The output voltage is adjustable from 1.2 V to 37 V using an external resistor divider.
Q2: What input voltage can the LM2596S‑ADJ/NOPB accept?
A: The regulator supports input voltages from 4.5 V to 40 V, making it versatile for different power sources.
Q3: What protection features are included in this regulator?
A: It includes overcurrent protection and thermal shutdown to ensure safe and reliable operation.
Q4: How can the quality of LM2596S‑ADJ/NOPB be verified?
A: 7SEtronic has a standardized quality inspection SOP, including label verification, visual inspection, and X-RAY testing, ensuring authenticity and reliable performance.
For more information and to review our available inventory, please contact our team for detailed pricing, current stock levels, and any additional technical support you may need.
You can find more component guides and application notes in our Component Technical Guides section: